![](/drem/stage12/labels2/S144L.gif)
![atrioventricular canal, cephalic edge of primary interatrial septum (septum primum), conus cordis, dermatomyotome 3 (O-3) , dorsal aorta, interatrial sulcus, left atrium, left ventricle, notochord, pharyngeal pouch 4, pharynx, precardinal vein, rhombencephalon (Rh. D), right atrium, sclerotome, somitocoel, sulcus limitans](/drem/stage12/Z0/S144N.jpg)
![](/drem/rulerbg.png)
0 μm
Carnegie Embryo #8943 | Location: 04-01-02
Keywords: atrioventricular canal, cephalic edge of primary interatrial septum (septum primum), conus cordis, dermatomyotome 3 (O-3) , dorsal aorta, interatrial sulcus, left atrium, left ventricle, notochord, pharyngeal pouch 4, pharynx, precardinal vein, rhombencephalon (Rh. D), right atrium, sclerotome, somitocoel, sulcus limitans
Source: The Virtual Human Embryo.